Question # 1

Which form of phosphorus is more stable.

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White

Red

Black

Both a and b

An atom or group of atoms, which confers characteristic properties to organic compounds, are called.

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Isomerism

Metamerism

Ligands

Functional groups

Alcohol obtained by fermentation is only upto

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10%

12%

20%

95%

The mineral CaSO₄.2H₂O has the general name

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Dolomite

Gypsum

Calcite

Epsom Salt

In which substance silicon is not present.

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Talc

Asbestos

Dolomite

Zirocon

Which one of the following compound is not of a polymer.

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Starch

Glucose

Protein

Nylon -6, 6

Di ethyl ether can be converted to alcohol by heating with.

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HI

NaOH

Water

KMnO4

Which compound shows maximum hydrogen bonding with water

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CH₃OH

C₂H₅OH

CH₃- O - CH₃

C₆H₅OH

Biphenyl is

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Monocyclic aromatic compound

Polyclic aromatic compound

Polycyclic fused ring compound

Alicyclic compound

Which one of the following alkanes will be formed by the hydrolysis of ethyl magnesium bromide

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Methane

Ethane

Butane

do not hydrolysed

Acetaldehyde can be prepared by the oxidation of.

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Acetic acid

Ethanol

1- Proponal

Ethanonic acid

Which one of the followings is major product when HBr reacts with 2-butene

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2- bromobutane

1- bromobutane

1-1 di bromobutane

1,2 di bromobutane

Which one of the following carbohydrates give blue colour with iodine.

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Glucose

fructose

Sucrose

Starch

Which one of the following products is not formed when acetic acid reacts with PCl5

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C2H5Cl

HCl

POCl3

CH3COCl

Predict the product or reaction.

Acetaldehyde +NaOH

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An aldol

Acetic acid

Ethanol

Paraldehyde

The carbon atom of a carbonyl group is

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sp hybridized

sp²hybridized

sp³hybridized

none of these

Which substance is used to convert Grignard reagent to alkane.

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H2O

NH3

Ethyl alcohol

All of these

Methyl alcohol can be represented by all of the following words or symbols except.

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CH3OH

Wood spirit

Methanol

Grain alcohol

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